MEXICO CITY (Dow Jones)--The Mexican peso lost ground against the U.S. dollar Monday, as uncertainty ahead of key EU summit and the lack of a deal on a Greek debt write-down made investors more cautious.

MEXICO CITY, Jan 30 (Reuters) - The Mexican peso on Monday slipped 0.76 per cent, by the concern of a lack of an agreement between Greece and its private creditors and while European leaders were struggling to reconcile measures to achieve growth with austerity.

MEXICO CITY (Dow Jones)--Mexico's stocks opened on a negative note Friday after a report showed that U.S. fourth-quarter economic growth, although the most robust in more than a year, was short of expectations.